Validity of a single lactate measure to predict fixed lactate thresholds in athletes
Deutscher übersetzter Titel: | Validität einer einfachen Laktatmessung zur Vorhersage der festen Laktatschwelle bei Sportlern |
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Autor: | Garcia-Tabar, Ibai; Llodio, Iñaki; Sánchez-Medina, Luis; Asiáin, Xabier; Ibáñez, Javier; Gorostiaga, Esteban M. |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 35 (2017), 4, S. 385-392, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640414.2016.1166392 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201612009304 |
Quelle: | BISp |
Abstract des Autors
This study aimed to validate the use of a single blood lactate concentration measure taken following a 12 km h−1 running stage (BLC12) to predict and monitor fixed blood lactate concentration (FBLC) thresholds. Three complementary studies were undertaken. Study I: the relationships between BLC12 and the running speeds at FBLC of 3 mmol L−1 (S3mM) and 4 mmol L−1 (S4mM) measured during a multistage running field test were examined in 136 elite athletes. Study II: data from 30 athletes tested one year apart were used to test the predictive capacity of the equations obtained in Study I. Study III: 80 athletes were tested before and after an intensified training period to examine whether training-induced changes in FBLC thresholds could be predicted and monitored by BLC12. Study I: BLC12 was significantly (P < 0.001) and inversely related to S3mM (R2 = 0.89) and S4mM (R2 = 0.95). Study II: prediction models yielded robust correlations between the estimated and measured FBLC thresholds (r = 0.94–0.99; P < 0.001). Study III: estimated changes predicted actual training-induced changes in FBLC thresholds (r = 0.81–0.91; P < 0.001). This study gives empirical support to use a single lactate measure during a sub-maximal running field test as a simple, low-cost and practical alternative to FBLC thresholds in athletes.